New India Trading Corporation

FINOLEX FLAMEGARD FRLS WIRESFinolex is the first company to introduce Flame Retardant Low Smoke Halogen (FR-LSH) electrical wires in India. Flamegard is manufactured by using electrolytic grade copper for conductor to ensure superior conductivity. Insulated with FR-LSH Grade PVC compound formulated and manufactured in-house. In case of fire, Flamegard wires has special flame retardant, low smoke emitting and toxic fumes suppressing properties, with improved fire performance for FR-LSH as per IS 694: 2010 with latest amendments. During fire, ordinary PVC insulated wires give out thick black smoke and toxic fumes of hydrochloric acid gas. This impairs visibility and hampers rescue operations. Flamegard wires, on the contrary, not only emit very little smoke and toxic gases, but also retards the spread of fire. It is thus ideal for concealed and conduit wiring in multistoried high rise buildings such as hotels, banks, hospitals, factories, commercial and residential complexes, etc. where the density of people is high. Flamegard wires go through rigorous tests to ensure the highest standards of quality. For unique identification these wires are provided with an orange stripe, on request. These wires are manufactured in our state-of-the-art manufacturing plants at Pimpri (Pune), Urse (Near Pune), Verna (Goa) and Roorkee (Uttarakhand).Finolex flamegard FRLS wires is manufactured using by using electrolytic grade copper of conductor to ensure superior conductivity. It is insulated with FR-LSH grade PVC compound formulated and manufactured in house. In case of fire, this wire emitting less smoke and less toxic fumes is the special features of this FRLSH cable.
Electrical safety is a function of five characteristics viz. smoke, hazardous gas generation, rate of heat release, flame spread and rate of burning. In case of fire in a closed space, trapped people are unable to find the exit due to emission of thick black smoke and loose consciousness due to the inhalation of toxic fumes before they can be evacuated to safety. The advantages of low smoke and low acid gas generation are additional and critical features available with Finolex FR-LSH Flamegard wires in comparison with FR (Flame Retardant) wires which do not provide these properties

Multi-Strand Wire:
The Multi-strand wires come with a bunch of small wires bunched together to form one thick conductor. Multi-strand wires are more malleable than single strand wires with the same cross-sectional surface. The multi-stranded wires come in handy when you need a higher resistance to metal fatigue.

Multi-strand wires are used when the rigid nature of single-strand wires is not suitable, such as for circuit boards.

Single strand wires are prone to power loss due to skin effect, where the current travels on the outer surfaces of the wire. Multi-strand wires can reduce the skin effect, as the surface area of all the strands is more significant than single-strand wires.

It may not be true in the case of ordinary stranded wires where the strands are twisted together to form a single core.

Multi-strand wires also come with higher resistance because the cross-section is not made entirely with copper. There are also air gaps between the strands which contribute to the high resistance.

Multi-Strand Wire Sizes
Multi-Strand wires can come in different sizes to suit various applications. American Wire Gauge or AWG is taken as the standard and represents the wire diameter. The diameter is calculated based on the conductor with the insulation removed.

A multi-strand wire has an overall larger diameter than a single strand wire of the same current capacity and electrical resistance because of the gaps between the different strands.

The thickness of the diameter is more in lower AWG wires, and they keep on decreasing as the number goes up. For example, AWG 12 or 14 is used for general household wiring while AWG 22, 24, or 26 is applicable for telephone wiring.

Multi-Strand Wire Specification
Multi-strand wires come with similar specifications as standard wires. The wires have multiple strands which are bunched together to form a single core.

The strands can be made of different materials such as copper or aluminum. They are covered by outer insulation made of plastic, rubber, or other items such as PVC. Sometimes, the individual strands of the wire are provided with separate insulation which goes a long way to reduce the proximity effect.

Multi-Strand Wire Current Capacity
The current carrying capacity of wires represents the amperage the conductor can carry before the core or the insulation melts. The heat produced by an electrical current in the conductor determines the amount of electricity it can carry.

The current capacity depends on some factors such as the size of the conductor, the ambient temperature, the type of conductor insulation, and the number of strands. The installation conditions will also affect the current capacity of the multi-strand wire.

A 6 AWG multi-strand wire with 7 to 24 cores will have a current capacity of 38 amps. A 10 AWG multi-strand wire with 25 to 42 cores will have a current capacity of 18 amps. The current capacity of 24 AWG multi-strand wire with 7 to 24 cores will be 1.4 amps. Both single-strand and multi-strand wires are used for both commercial and residential purposes.